Salvadorans mourned through social media and some left flowers at the gate of the zoo, which has been closed until further notice.

“Here we’re used to seeing the dead every day,” Martin Castillo, a street vendor in the capital’s historic downtown, said Monday. “They kill us like flies, but this tops it all. They killed an animal that only entertained us.”

“We’re angry,” said Carmen Rogel, who often brings her grandson to the zoo. “We didn’t know they had killed Gustavito and were surprised when we arrived and the gate was closed.”

El Salvador is one of the world’s most violent countries, recording 5,278 homicides last year, or an average of 14 people killed per day. Most of the killings have been blamed on powerful street gangs.